O ocgirl83 New member Joined Sep 3, 2005 Messages 39 Sep 3, 2005 #1 David gets to work in 20 min when he drives his car. Riding his bike(by the same route) takes him 45 mins. His average driving speed is 4.5 mph greater than his average speed on his bike. How far does he travel to work?

David gets to work in 20 min when he drives his car. Riding his bike(by the same route) takes him 45 mins. His average driving speed is 4.5 mph greater than his average speed on his bike. How far does he travel to work?

stapel Super Moderator Staff member Joined Feb 4, 2004 Messages 15,946 Sep 3, 2005 #2 biking: rate: b time: 3/4 distance: ??? driving: rate: b + ??? time: 1/3 distance: ??? Complete the table. Set the equal distances equal. Solve. Eliz.

biking: rate: b time: 3/4 distance: ??? driving: rate: b + ??? time: 1/3 distance: ??? Complete the table. Set the equal distances equal. Solve. Eliz.